00310nam a2200109 a 450000500170000002000150001708200150003210000200004724500750006726000400014230000180018220251203091754.0  a0824722779  a020.3bENC  aKent, Allen Ed.  aEncyclopedia of Library and Information Science, Vol.50, Supplement-13  aNew YorkbMarcel Dekker, INC.c1992  a389p.c24 cm.